It is probably easier to make an analogy between the courses of the planets, and two trains travelling in the same direction. 将行星的运行比作两列火车朝同一方向行驶可能更容易些。
He developed a mathematical formula describing the distances of the planets from the Sun. 他研究出了一个用于计算行星与太阳之间距离的数学公式。
Given the sheer number of stars that exist it's a mathematical certainty that there is life on other planets. 考虑到现有星球数量,从数学的角度来说,其他行星上面肯定存在生命。
All the planets orbit the Sun in roughly the same plane, round its equator. 所有的行星大致在同一平面上绕太阳赤道运转。
The picture shows six of the eight planets in the solar system. 这幅图标示了太阳系八大行星中的6颗。
Its rings were discovered by telescope from Earth, but space probes later found that spectacular rings surround some other planets 它的圆环是从地球上用望远镜发现的,但是太空探测器后来又发现了围绕其他一些星球的壮观的圆环。
The planets revolve around the sun. 行星绕着太阳运转。
She wrote important studies of the planets Jupiter and saturn. 她写了几篇关于木星和土星的重要学术论文。
The earth is one of the planets in the galaxy. 地球是银河系中的星球之一。
Some planets run at incredible speed. 某些星球以难以置信的速度运行着。
We do not know if there are beings on other planets. 我们不知道在别的行星上是否有生物。
These nine planets, together with the sun, make up what is called our solar system. 这九大行星和太阳一起组成了所谓的我们的太阳系。
The Hubble telescope has snapped pictures of planets, stars and galaxies. 哈勃望远镜拍摄了行星,恒星和星系的照片。
I can see the sun, the moon and two planets. 我能看见太阳、月亮和星星。
Perhaps we even think that maybe supernova explosions trigger formations of planets and stars. 我们甚至认为,或许是超新星爆炸,触发了行星和恒星的形成。
I like books about the planets and the sun. 我喜欢关于行星和太阳的书籍。
Venus, Earth, and other planets also perturb Mercury's motion. 金星,地球和其他行星也使水星的运动受到摄动。
From the earth we can see the moon, stars, and planets. 从地球上我们可看到月亮、星星和其他行星。
Planets, asteroids, and satellites shine only by reflected sunlight. 行星、小行星和卫星都是靠反射太阳光而发光的。
The heavier elements then seeded the new forming stars and planets. 更重的元素然后播种了新形成的星和行星。
The sun and its planets are called the solar system. 太阳和它的行星称为太阳系。
The sun and the planets are heavenly bodies. 太阳和行星都是天体。
She works nearby; the planets orbiting nearby are Venus and Mars. 她在附近工作;在附近运行的行星是金星和火星。
There are many volcanoes on planets and moons. 行星和卫星上有许多火山。
In 1609, Galileo improved the telescope and used it to study the stars and planets. 1609年,伽利略改进了望远镜,用它研究星体和行星。
He collected facts that proved the earth and all the other planets moved around the sun. 他搜集了证明地球和其它所有的行星围绕太阳运转的事实。
Gravity acts within and between stars, planets and spacecraft. 万有引力作用于恒星、行星和宇宙飞船内部和彼此之间。
Mars and Venus are planets of the sun. 火星和金星是环绕太阳的两个行星。
Did you see all the planets and stars? 你看到那些行星和星星了吗?